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DO OLIGOPOLISTS POLLUTE LESS? EVIDENCE FROM A RESTRUCTURED ELECTRICITY MARKET *
Author(s) -
MANSUR ERIN T.
Publication year - 2007
Publication title -
the journal of industrial economics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.93
H-Index - 77
eISSN - 1467-6451
pISSN - 0022-1821
DOI - 10.1111/j.1467-6451.2007.00325.x
Subject(s) - restructuring , electricity market , electricity , market power , production (economics) , economics , perfect competition , natural resource economics , electricity generation , business , industrial organization , power (physics) , market economy , microeconomics , finance , physics , quantum mechanics , electrical engineering , monopoly , engineering
Electricity restructuring has created the opportunity for producers to exercise market power. Oligopolists increase price by distorting output decisions, causing cross‐firm production inefficiencies. This study estimates the environmental implications of production inefficiencies attributed to market power in the Pennsylvania, New Jersey, and Maryland electricity market. Air pollution fell substantially during 1999, the year in which both electricity restructuring and new environmental regulation took effect. I find that strategic firms reduced their emissions by approximately 20% relative to other firms and their own historic emissions. Next, I compare observed behavior with estimates of production, and therefore emissions, in a competitive market. According to a model of competitive behavior, changing costs explain approximately two‐thirds of the observed pollution reductions. The remaining third can be attributed to firms exercising market power.